Published: 16/01/2019 Updated: 09/01/2020

CVSS v2 Base Score: 5 | Impact Score: 2.9 | Exploitability Score: 10

CVSS v3 Base Score: 7.5 | Impact Score: 3.6 | Exploitability Score: 3.9

VMScore: 445

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

A vulnerability stemming from failure to properly clean up closed OMAPI connections can lead to exhaustion of the pool of socket descriptors available to the DHCP server. Affects ISC DHCP 4.1.0 to 4.1-ESV-R15, 4.2.0 to 4.2.8, 4.3.0 to 4.3.6. Older versions may also be affected but are well beyond their end-of-life (EOL). Releases before 4.1.0 have not been tested.

Vulnerable Product	Search on Vulmon	Subscribe to Product
isc dhcp 4.1-esv
isc dhcp 4.1.0
isc dhcp
redhat enterprise linux server tus 7.6
redhat enterprise linux server tus 7.4
redhat enterprise linux server 7.0
redhat enterprise linux server eus 7.4
redhat enterprise linux server eus 7.6
redhat enterprise linux server aus 7.6
redhat enterprise linux desktop 7.0
redhat enterprise linux workstation 7.0
redhat enterprise linux server eus 7.5
redhat enterprise linux server aus 7.4
canonical ubuntu linux 16.04
canonical ubuntu linux 14.04
canonical ubuntu linux 17.10
debian debian linux 8.0
debian debian linux 9.0

Synopsis Moderate: dhcp security update Type/Severity Security Advisory: Moderate Topic An update for dhcp is now available for Red Hat Enterprise Linux 7Red Hat Product Security has rated this update as having a security impact of Moderate A Common Vulnerability Scoring System (CVSS) base score, which gi ...

Several security issues were fixed in DHCP ...

Several vulnerabilities have been discovered in the ISC DHCP client, relay and server The Common Vulnerabilities and Exposures project identifies the following issues: CVE-2017-3144 It was discovered that the DHCP server does not properly clean up closed OMAPI connections, which can lead to exhaustion of the pool of socket descriptors ...

Debian Bug report logs - #887413 isc-dhcp: CVE-2017-3144: dhcp: omapi code doesn't free socket descriptors when empty message is received allowing denial-of-service Package: src:isc-dhcp; Maintainer for src:isc-dhcp is Debian ISC DHCP Maintainers <isc-dhcp@packagesdebianorg>; Reported by: Salvatore Bonaccorso <carnil@deb ...

Debian Bug report logs - #891786 isc-dhcp: CVE-2018-5732: A specially constructed response from a malicious server can cause a buffer overflow in dhclient Package: src:isc-dhcp; Maintainer for src:isc-dhcp is Debian ISC DHCP Maintainers <isc-dhcp@packagesdebianorg>; Reported by: Salvatore Bonaccorso <carnil@debianorg&gt ...

Debian Bug report logs - #891785 isc-dhcp: CVE-2018-5733: A malicious client can overflow a reference counter in ISC dhcpd Package: src:isc-dhcp; Maintainer for src:isc-dhcp is Debian ISC DHCP Maintainers <isc-dhcp@packagesdebianorg>; Reported by: Salvatore Bonaccorso <carnil@debianorg> Date: Wed, 28 Feb 2018 20:42 ...

Omapi code doesn't free socket descriptors when empty message is received allowing denial-of-serviceIt was found that the DHCP daemon did not properly clean up closed OMAPI connections in certain cases A remote attacker able to connect to the OMAPI port could use this flaw to exhaust file descriptors in the DHCP daemon, leading to a denial of serv ...

It was found that the DHCP daemon did not properly clean up closed OMAPI connections in certain cases A remote attacker able to connect to the OMAPI port could use this flaw to exhaust file descriptors in the DHCP daemon, leading to a denial of service in the OMAPI functionality ...

CWE-400 https://kb.isc.org/docs/aa-01541 https://www.debian.org/security/2018/dsa-4133 https://usn.ubuntu.com/3586-1/https://access.redhat.com/errata/RHSA-2018:0158 http://www.securitytracker.com/id/1040194 http://www.securityfocus.com/bid/102726 https://access.redhat.com/errata/RHSA-2018:0158 https://usn.ubuntu.com/3586-1/https://nvd.nist.gov

CVE-2017-3144

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